Question

在我的程序中，我有一个父类和该类的2个派生类。在一个函数中（虚函数，每个类/衍生函数不同）我赋予（使用new）一个其他类的var。结果，导致编译错误。我该如何解决？

部分代码：父类：

class client
{
protected:
    double surf_hours,disc_space,phone_time;
    string first_name,last_name;
public:
.
.
.
    virtual client* is_valid_plan()
    {
         client *B,*C;
         double client, business, company;
         client=compute_bill();
         B= new business(first_name,last_name,surf_hours,disc_space,phone_time);
         C= new company(first_name,last_name,surf_hours,disc_space,phone_time);
         .
         .
         .
};

派生类＃1：

class business:public client
{
public:
    business(string name, string last, double surf, double disc, double phone):client(name,last,surf,disc,phone){}
    client* is_valid_plan()
    {
         client *B,*C;
         double client, business, company;
         business=compute_bill();
         B= new client(first_name,last_name,surf_hours,disc_space,phone_time);
         C= new company(first_name,last_name,surf_hours,disc_space,phone_time);
         .
         .
         .
};

派生类＃2：

class company:public client
{
public:
    company(string name, string last, double surf, double disc, double phone):client(name,last,surf,disc,phone){}
    client* is_valid_plan()
    {
         client *B,*C;
         double client, business, company;
         company=compute_bill();
         B= new business(first_name,last_name,surf_hours,disc_space,phone_time);
         C= new client(first_name,last_name,surf_hours,disc_space,phone_time);
         .
         .
         .
};

Answer 1

您有变量/类名冲突：

   double client, business, company;
                  ^^^^^^^^
   client=compute_bill();
   B= new business(first_name,last_name,surf_hours,disc_space,phone_time);
          ^^^^^^^^

为business变量选择更好的名称。同样的问题与其他变量名称有关：client和company。

在c ++中创建父类中的派生calss

1 个答案: